Main Question or Discussion Point
Anyone know the radiation levels that are output by the full body airport scanners? I am not looking for a relative amount, but a quantitive amount. If you do not know, please dont answer.
Going once through the scanner would expose me to about 25 microrems but I would need to be exposed to over 100 rems to experience any adverse health effects. So... I would have to go through the scanner 4 million times to accumulate at least 100 rems..?Wikipedia said:A dose of under 100 rems is subclinical and will produce nothing other than blood changes. 100 to 200 rems will cause illness but will rarely be fatal. Doses of 200 to 1000 rems will likely cause serious illness with poor outlook at the upper end of the range. Doses of more than 1000 rems are almost invariably fatal. See radiation poisoning for a more complete analysis of effects of various dosage levels.
The claimed 25mrem is a little bit optomistic - it's the equivalent dose assuming that the energy is averaged through the entire body. Since the energy here is concentrated in the skin the effective dose may be 3-4x higher.So... people opting out of the scanner are being irrational? 25 microrems sound like a better deal than some TSA dude touching my junk
Use of an airline flying in US airspace constitutes consent to a security screen. Legality of security screening has been challenged and does have limits (http://online.wsj.com/article/SB10001424052970204556804574261940842372518.html"), but the congressional mandate of the TSA to search for explosives and weapons has not been successfully challenged in court....but so long as TSA is a government agency, without a search warrant, I'd argue none of these searches are legal without the passengers consenting to them.
I don't think it HAS been challenged recently. Not too many people would bother with the cost of pursuing a lawsuit all the way to the Supreme Court level over a tube of toothpaste confiscated by security screeners. I would argue more, but this thread isn't about the search and seizure part, or the legalities of what constitutes consent, it's about the radiation exposure.Use of an airline flying in US airspace constitutes consent to a security screen. Legality of security screening has been challenged and does have limits (http://online.wsj.com/article/SB10001424052970204556804574261940842372518.html"), but the congressional mandate of the TSA to search for explosives and weapons has not been successfully challenged in court.
At 25 microrems, you are exposed to less than a tenth of the radiation that you would absorb just by sitting for an hour in a plane flying at 25,000 feet.
You don't even have to fly to get zapped. Just existing, you get the equivalent of 33 airport TSA xrays every single day of your life.http://www.ornl.gov/sci/env_rpt/aser95/tb-a-2.pdf [Broken]
300 mrem = Average yearly dose to people in the United States from all sources of natural background radiation
I did. That's why I thought it was so funny. I've had laymen argue about radiation with me before, and they seem to be completely unaware that they are immersed in a bath of background radiation. I was watching Rachel Maddow grill Art Robinson* about a paper he wrote many years ago on http://en.wikipedia.org/wiki/Radiation_hormesis" [Broken]. His idea seemed to have been a thought experiment whereby you took all the radioactive waste in the country, mixed it with dirt or something, then spread it evenly over the entire nation. I thought the idea was both silly and intriguing at the same time. But anyways, Robinson, who is a scientist, and has no concept of speaking in a political manner, responded to Maddow that he would not explain the process, because she would not understand it. I'd have phrased it a bit differently. "Ms. Maddow, you are, as we speak, being irradiated by your surroundings. And as a matter of fact, if it weren't for radiation, you wouldn't exist."Think about that one a bit...
*I would post a link to the video, but, although many words were exchanged, there is no knowledge to be extracted from the conversation. Except for perhaps the introduction of the word 'hormesis' to your lexicon, which I've already posted above.Ultraviolet (UV) irradiation present in sunlight is an environmental human carcinogen.http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6WXH-4B6CP1T-5&_user=10&_coverDate=03/15/2004&_rdoc=1&_fmt=high&_orig=search&_origin=search&_sort=d&_docanchor=&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=a13c4f10eced3a784f084c41cdca71ed&searchtype=a"
Children are being admitted to hospital suffering from rickets (vitamin D deficency) because of paranoia about skin cancer ;-)But I should add that age old rule; "Wear sunscreen".
Oh my god!Children are being admitted to hospital suffering from rickets (vitamin D deficency) because of paranoia about skin cancer ;-)
A few minutes a day? People don't even go out in the sun for a few minutes a day?Casualty departments are dealing with dozens of emergency cases where infants are having seizures as a direct result of not getting enough vitamin D, which is essential for healthy teeth and bones.
In one case, a baby suffered brain damage after a fit.
Mr Michie analysed the cases of 17 babies and infants treated at Ealing Hospital for a severe lack of vitamin D between 2006 and 2008. He found many experienced a delay in walking, a problem last common in Victorian times.
Cancer Research UK is considering changing it guidelines concerning sun exposure because of the problem.
Instead of advising people to stay out the midday sun completely, it may suggest that a few minutes exposure could be healthy.
wiki on H.G. Wells; The Time Machine said:Later in the dark, he is approached menacingly by the Morlocks, pale, apelike people who live in darkness underground, where he discovers the machinery and industry that makes the above-ground paradise possible. He alters his theory, speculating that the human race has evolved into two species: the leisured classes have become the ineffectual Eloi, and the downtrodden working classes have become the brutish light-fearing Morlocks.